The Saugus Line opened in 1876, providing rail service between San Francisco and Los Angeles. It is now one of three paths that Southern Pacific utilizes to get into the Los Angeles basin from Northern California. The Saugus Line splits off from the Colton Line at Palmdale Junction and makes a southwesterly run through Soledad Canyon and into Saugus. At Saugus the rails make a sharp turn to the southeast, running to Burbank Junction, where the Saugus Line joins the Coast Line. In SP terms, eastbound trains run from Palmdale to Los Angeles and westbound trains run from Los Angeles to Palmdale. This creates a unique situation in Soledad Canyon as eastbound trains head geographically west and westbound trains run eastward.